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Variations in the isotopic composition of stable mercury isotopes in typical mangrove plants of the Jiulong estuary, SE China

Environmental science and pollution research international, 2017, Vol.24 (2), p.1459-1468 [Peer Reviewed Journal]

Springer-Verlag Berlin Heidelberg 2016 ;Environmental Science and Pollution Research is a copyright of Springer, 2017. ;ISSN: 0944-1344 ;EISSN: 1614-7499 ;DOI: 10.1007/s11356-016-7933-1 ;PMID: 27783251

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Title:
Variations in the isotopic composition of stable mercury isotopes in typical mangrove plants of the Jiulong estuary, SE China
Author: Sun, Lumin ; Lu, Bingyan ; Yuan, Dongxing ; Hao, Wenbo ; Zheng, Ying
Subjects: Aegiceras ; Aquatic Pollution ; Atmospheric Protection/Air Quality Control/Air Pollution ; Biogeochemical cycles ; Bruguiera gymnorhiza ; Chemical Fractionation ; China ; Contamination ; Data processing ; Earth and Environmental Science ; Ecotoxicology ; Environment ; Environmental Chemistry ; Environmental Health ; Estuaries ; Fractionation ; Inductively coupled plasma ; Isotopes ; Kandelia candel ; Leaves ; Mangroves ; Mass spectrometry ; Mass spectroscopy ; Mercury ; Mercury (metal) ; Mercury isotopes ; Mercury Isotopes - chemistry ; Plant tissues ; Plants (botany) ; Research Article ; Rhizophoraceae - chemistry ; Stable isotopes ; Studies ; Transformation ; Variation ; Waste Water Technology ; Water Management ; Water Pollution Control ; Wetlands
Is Part Of: Environmental science and pollution research international, 2017, Vol.24 (2), p.1459-1468
Description: Variations in the composition of stable isotopes of mercury contained in tissues (root, stem, leaf, and hypocotyl or flower) of three typical mangrove plants ( Kandelia candel , Aegiceras corniculata , and Bruguiera gymnorhiza ), collected from the mangrove wetland of Jiulong estuary, SE China, were used to investigate the sources and transformation of mercury in the mangrove plants. Tissue samples from the plants were digested and mercury in the solution was pre-concentrated with purge-trap method and then analyzed by multi-collector inductively coupled plasma mass spectrometry (MC-ICP-MS). The results showed that the mass dependent fractionation (MDF) of mercury ranged from −2.67 to −0.87 ‰ for δ 202 Hg while the mass independent fractionation (MIF) of mercury isotopes ranged from −0.16 to 0.09 and −0.19 to 0.05 ‰ for Δ 199 Hg and Δ 201 Hg, respectively, relative to the standard NIST SRM 3133. The ratio of Δ 199 Hg/Δ 201 Hg was 0.991, indicating that the mercury had been photo-reduced before being accumulated in mangrove plants. Analyses of the data from MIF studies revealed that the major portion of the mercury measured in leaves (∼90 %) originated from the atmosphere while the source of over half of the mercury present in roots was the surficial sediment. This study, the first of its kind investigating the variations in isotopic composition of mercury in the tissues of mangrove plants, could be helpful to identify the source of mercury contamination in mangroves and understand the biogeochemical cycle of mercury in the estuarine mangrove wetlands.
Publisher: Berlin/Heidelberg: Springer Berlin Heidelberg
Language: English
Identifier: ISSN: 0944-1344
EISSN: 1614-7499
DOI: 10.1007/s11356-016-7933-1
PMID: 27783251
Source: MEDLINE
ProQuest Central

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Variations in the isotopic composition of stable mercury isotopes in typical mangrove plants of the Jiulong estuary, SE China

Springer-Verlag Berlin Heidelberg 2016 ;Environmental Science and Pollution Research is a copyright of Springer, 2017. ;ISSN: 0944-1344 ;EISSN: 1614-7499 ;DOI: 10.1007/s11356-016-7933-1 ;PMID: 27783251

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